Gear Vendors

[Cooter]

30" rears ??
what tires are you running on your 74?

I think he was just making a point about how he can Dr o the same thing a helluva lot cheaper with uber tall tires.

[1974dodgecharger]

What cooter said 

With 30inch tall tires I spin 2700 at 80mph I now have 28inch tires and spin 3k at 80mph just to show u a diff a rear size tire makes vs a OD unit and its price.

[John_Kunkel]

Tire size isn't changeable on the fly.

[Troy]

Tire size isn't changeable on the fly.

We need a "completely missing the point" smiley...

Troy

[68X426]

A 30 inch tall tire is great for highway travel, but wouldn't it kill street driving/hot rodding?  And hurt the efficiency of the combined motor/gearing/shift points?

What's the point of a hot motor when the effective final gearing (30 inch tire) is well under a 3.00 ratio?  Would not the engine be lugging around in too low an rpm range most of the time, and be a laggard right when you want applied power?

I think the obvious answer is that one has to be sure to match tire height to the selected gear ratio, the cam's effective rpm range, and the type of driving one does.  30 inch tires can have consequences on performance and streetability.

[1974dodgecharger]

Tire size isn't changeable on the fly.

But i dont have 4k cash either on the fly  

[1974dodgecharger]

Uu uhhh yeah, but i was giving OP some options thats all.  U guys act like we have tons of money lying around and sleeping in it like magic Johnson here.


Sure if i had cash just like that i would get GV but i dont unless u guys want to give it to me so i dont hurt performance on my car  ill be more than happy to take yo cash and put a GV unit in my vehicle.

A 30 inch tall tire is great for highway travel, but wouldn't it kill street driving/hot rodding?  And hurt the efficiency of the combined motor/gearing/shift points?

What's the point of a hot motor when the effective final gearing (30 inch tire) is well under a 3.00 ratio?  Would not the engine be lugging around in too low an rpm range most of the time, and be a laggard right when you want applied power?

I think the obvious answer is that one has to be sure to match tire height to the selected gear ratio, the cam's effective rpm range, and the type of driving one does.  30 inch tires can have consequences on performance and streetability.

[Troy]

Uu uhhh yeah, but i was giving OP some options thats all.  U guys act like we have tons of money lying around and sleeping in it like magic Johnson here.


Sure if i had cash just like that i would get GV but i dont unless u guys want to give it to me so i dont hurt performance on my car  ill be more than happy to take yo cash and put a GV unit in my vehicle.

A 30 inch tall tire is great for highway travel, but wouldn't it kill street driving/hot rodding?  And hurt the efficiency of the combined motor/gearing/shift points?

What's the point of a hot motor when the effective final gearing (30 inch tire) is well under a 3.00 ratio?  Would not the engine be lugging around in too low an rpm range most of the time, and be a laggard right when you want applied power?

I think the obvious answer is that one has to be sure to match tire height to the selected gear ratio, the cam's effective rpm range, and the type of driving one does.  30 inch tires can have consequences on performance and streetability.

Yes BUT... the OP has already decided to use the Gear Vendors and was looking for specific answers about it. Throwing out irrelevant opinions just clutters the thread. One reason why I hate asking technical questions on a forum - I get 50 opinions about something I never asked.

Troy

[Sublime/Sixpack]

Agreed!

[68X426]

U guys act like we have tons of money lying around and sleeping in it like magic Johnson here.

Is your gas cheap?  Mine sure isn't.  Whether or not you have a ton of money lying around (I do hope times get better for you), you spend plenty on gasoline just like all of us.

My point is that the tall tire can (and probably does) hurt performance on the street, lugging the motor, and likely using more gas.  So as an "efficiency" option, the tall tire may not accomplish better use of your gas dollars.  Just needs to be investigated closely.  It's about bang for the buck, and GV is not the smartest purchase one can make, but it certainly works great.

Excuse me while I go sleep in my Larry Bird money.

[John_Kunkel]

Tire size isn't changeable on the fly.

But i dont have 4k cash either on the fly  

Where's the SOL emoticon when you need one?

[7TTA]

lets see if I can post jpg

[7TTA]

one more time

[7TTA]

Notice horrible silver green paint.  F3 I think.  I hate it.  I was going to paint car J6 1971 Green Go/Sassy Grass but son will get the car one day and he doesn't like the Green Go, so we compromised on B7 blue.
note tires are Goodyear Eagle short track race specials.  I had them retreaded with rain tire/hard tread so I could run them on the street.  Put them on stock car Bassett steel race wheels.  What I didn't know about this project was a lot. 
Race wheels take 45 degree lug nuts, not 30 degree lugs nuts.
Which they don't make in left hand thread, so I needed new studs on the left side of the car.
And you have to run inner tubes because they leak, they are not a 40,000 mile tire.
They looked stunning and were terrifying to drive.  Wanted to change lanes in the ruts.  Scary.
I was trying to sort out handling, but D came and ex-wife's boyfriend slashed them, so that was the end of that failed experiment.

I'm ordering BFG Radial T/As in 235 and 275 60x15s here in a couple weeks.
I'm also ordering 15x7 and 15x8 1968 Magnum 500 wheels.

will post some photos when I get car out of garage and in new rubber

[hemi68charger]

...
note tires are Goodyear Eagle short track race specials.  I had them retreaded with rain tire/hard tread so I could run them on the street.  Put them on stock car Bassett steel race wheels.  ....

will post some photos when I get car out of garage and in new rubber

How did that turn out? I was thinking of getting some Eagle Dirt Racing tires ( basically short track tires with tread ) on my Daytona for special occasions..... Did they get real soft with the heat generated from usual driving on the streets and sling rubber everywhere?

[7TTA]

I know the Ford Cobra guys will run race tires on the street.
I bought my tires and had them retreaded all in one step (Towel City Race Tires, NC) so I never ran them in the soft compound.
I talked to Goodyear about running race tires on my 70 Trans Am and they suggested running the Vintage tires which have a harder compound and tread.

I ran a 27x8 front on 15x8 wheel and 4.5BS and 28x10 rears on 15x10s with 5.5BS.
they fit and looked great, but like I said they tended to want to change lanes.

I think you would be fine with the hard factory tread

[randy73]

I put a rebuilt 46RH w/2200 stall converter for less than half of GV's cost and mine is .69 OD. I looked at a car with GV in it, I understand it is a pain to drive around town.

[Kern Dog]

The Mopar factory overdrive transmissions all require cutting and welding to properly fit our classics.